Light beam processor

Abstract

A light beam processor includes a first light beam amplifying apparatus, a second light beam amplifying apparatus, and a light source generating apparatus. The light source generating apparatus is configured to emit a light source beam to the first light beam amplifying apparatus. The first light beam amplifying apparatus is configured to perform an initial amplification on the light source beam to obtain an amplified light beam. The second light beam amplifying apparatus is configured to perform a secondary amplification on the amplified light beam to obtain a target light beam. The target light beam is used as an output light beam of the light beam processor.

What is claimed is: 
     
         1 . A light beam processor comprising a first light beam amplifying apparatus, a second light beam amplifying apparatus and a light source generating apparatus, the first light beam amplifying apparatus comprising a first light beam reflecting unit, a first light beam amplifying unit and a second light beam reflecting unit, wherein a parameter of an emission peak of the first light beam amplifying apparatus matches a parameter of an absorption peak of the second light beam amplifying apparatus, the first light beam reflecting unit is connected to the first light beam amplifying unit, the first light beam amplifying unit is connected to the second light beam amplifying apparatus, the second light beam amplifying apparatus is connected to the second light beam reflecting unit, and the light source generating apparatus is connected to the first light beam amplifying unit;
 the light source generating apparatus is configured to emit a light source beam to the first light beam amplifying apparatus;   the first light beam amplifying apparatus is configured to perform an initial amplification on the light source beam to obtain an amplified light beam, wherein the first light beam reflecting unit and the second light beam reflecting unit are used to form a resonant cavity to select a laser wavelength; and   the second light beam amplifying apparatus is configured to perform a secondary amplification on the amplified light beam to obtain a target light beam, wherein the target light beam is used as an output light beam of the light beam processor.   
     
     
         2 . The light beam processor of  claim 1 , wherein the resonant cavity is formed by the first light beam reflecting unit and the second light beam reflecting unit by means of inscribing a phase shift grating by UV light to select the laser wavelength. 
     
     
         3 . The light beam processor of  claim 1 , wherein the second light beam amplifying apparatus includes an apparatus configured to perform the secondary amplification on the amplified light beam to realize operation of single-longitudinal-mode of a single-frequency fiber laser, and output a dynamic single-longitudinal-mode narrow-linewidth light beam. 
     
     
         4 . The light beam processor of  claim 1 , wherein the second light beam amplifying apparatus comprises a second light beam amplifying unit and a temperature control unit, wherein the second light beam amplifying unit comprises a light beam resonant cavity formed by a grating, the light beam resonant cavity is connected with the first light beam amplifying unit and the second light beam reflecting unit, and the temperature control unit is connected to the light beam resonant cavity;
 the temperature control unit is configured to control temperature of the light beam resonant cavity to be within an operating temperature range; and   the light beam resonant cavity is configured to perform the secondary amplification on the amplified light beam in the operating temperature range to obtain the target light beam.   
     
     
         5 . The light beam processor of  claim 4 , wherein the light beam resonant cavity is formed by inscribing a phase shift grating by UV light. 
     
     
         6 . The light beam processor of  claim 4 , wherein a single-longitudinal-mode is stably operated when a longitudinal mode spacing of the light beam resonant cavity is greater than a reflection bandwidth of the fiber grating. 
     
     
         7 . The light beam processor of  claim 4 , wherein the temperature control unit is a semiconductor refrigerator. 
     
     
         8 . The light beam processor of  claim 4 , wherein the temperature control unit comprises a temperature regulator and a wavelength regulator, wherein the temperature regulator is connected to the light beam resonant cavity and the wavelength regulator is connected to a grating of the light beam resonant cavity;
 the temperature regulator is configured to control the temperature of the light beam resonant cavity to be within the operating temperature range; and   the wavelength adjuster is configured to adjust a spacing of the grating of the light beam resonant cavity.   
     
     
         9 . The light beam processor of  claim 1 , wherein the light source generating apparatus comprises a first light beam generating unit, wherein the first light beam generating unit is connected to a side of the first light beam amplifying unit connected to the first light beam reflecting unit, or the first light beam generating unit is connected to a side of the first light beam amplifying unit connected to the second light beam amplifying apparatus; and
 the first light beam generating unit is configured to transmit the light source beam to the first light beam amplifying apparatus.   
     
     
         10 . The light beam processor of  claim 9 , wherein the first light beam generating unit comprises a first laser and a first beam combiner, wherein the first laser is connected to the first beam combiner; the first beam combiner is connected to a side of the first light beam amplifying unit connected to the first light beam reflecting unit, or the first beam combiner is connected to a side of the first light beam amplifying unit connected to the second light beam amplifying apparatus;
 the first laser is configured to generate the light source beam; and   the first beam combiner is configured to transmit the light source beam to the first light beam amplifying unit.   
     
     
         11 . The light beam processor of  claim 1 , wherein the light source generating apparatus comprises a second light beam generating unit and a third light beam generating unit, wherein the second light beam generating unit is connected to a side of the first light beam amplifying unit connected to the first light beam reflecting unit, and the third light beam generating unit is connected to a side of the first light beam amplifying unit connected to the second light beam amplifying apparatus;
 the second light beam generating unit is configured to emit a first light beam to the first light beam amplifying apparatus; and   the third light beam generating unit is configured to emit a second light beam to the first light beam amplifying apparatus; and   wherein the light source beam comprises the first light beam and the second light beam.   
     
     
         12 . The light beam processor of  claim 11 , wherein the second light beam generating unit comprises a second laser and a second beam combiner, and the third light beam generating unit comprises a third laser and a third beam combiner, wherein the second laser is connected to the second beam combiner, the second beam combiner is connected to the side of the first light beam amplifying unit connected to the first light beam reflecting unit, the third laser is connected to the third beam combiner, and the third beam combiner is connected to the side of the first light beam amplifying unit connected to the second light beam amplifying apparatus;
 the second laser is configured to generate the first light beam, and the second beam combiner is configured to transmit the first light beam to the first light beam amplifying unit; and   the third laser is configured to generate a second light beam; and the third beam combiner is configured to transmit the second light beam to the first light beam amplifying unit.   
     
     
         13 . The light beam processor of  claim 11 , wherein the second light beam generating unit and the third light beam generating unit are connected by dual-end pumping of an intracavity multi-mode semiconductor laser. 
     
     
         14 . The light beam processor of  claim 1 , wherein the light beam processor further comprises a light beam stripper and a light beam outputter, wherein the light beam stripper is connected with the second light beam reflecting unit and the light beam outputter;
 the light beam stripper is configured to select the target light beam from input light beam and transmit the target light beam to the light beam outputter; and   the light beam output device is configured to output the target light beam.   
     
     
         15 . The light beam processor of  claim 1 , wherein the first light beam reflecting unit comprises a first mirror and the second light beam reflecting unit comprises a second mirror. 
     
     
         16 . The light beam processor of  claim 1 , wherein the first light beam reflecting unit comprises a first reflection grating and the second light beam reflecting unit comprises a second reflection grating. 
     
     
         17 . The light beam processor of  claim 1 , wherein the first light beam reflecting unit comprises a first fiber grating, the first light beam amplifying unit comprises a gain fiber, and the second light beam reflecting unit comprises a second fiber grating;
 the second light beam amplifying apparatus comprises a distributed feedback laser resonant cavity, a semiconductor cooler, and a piezoelectric ceramic, wherein the distributed feedback laser resonant cavity is connected with the gain fiber and the second fiber grating, the semiconductor cooler is connected to the distributed feedback laser resonant cavity, and the piezoelectric ceramic is connected to a grating of the distributed feedback laser resonant cavity; and   the light source generating apparatus comprises a first multimode semiconductor laser, a first signal pumping beam combiner, a second multimode semiconductor laser, and a second signal pumping beam combiner, wherein the first multimode semiconductor laser is connected to the first signal pumping beam combiner, the first signal pumping beam combiner is connected with the first fiber grating and the gain fiber, the second multimode semiconductor laser is connected to the second signal pumping beam combiner, and the second signal pumping beam combiner is connected with the gain fiber and the distributed feedback laser resonant cavity.   
     
     
         18 . The light beam processor of  claim 17 , wherein the gain fiber is an ytterbium-doped fiber. 
     
     
         19 . The light beam processor of  claim 17 , wherein the light source generating apparatus is a distributed feedback laser. 
     
     
         20 . The light beam processor of  claim 1 , wherein a parameter of an emission peak of the gain fiber of the first light beam amplifying apparatus matches a parameter of an absorption peak of the gain fiber of the second light beam amplifying apparatus.